3. Justin Bieber: 21 Under 21 (2014)

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Justin Bieber is seen in Hollywood on July 28, 2014 in Los Angeles, California. 

21 Under 21 Main Page

Birthdate: March 1, 1994 (Age: 20)

Last Year’s Rank: No. 2

Why He's Hot: And so we arrive at Justin Bieber’s final year on our 21 Under 21 list with a whimper and not a bang: the pop phenom has slipped a spot in each of his past two years, after last crowning the list in 2012. The slide has been understandable, given the arrests, the various tour fiascoes and the unearthing of a long-forgotten racist video by TMZ, among many other recent debacles. The thing is, the Biebs is still a superstar, with multiple top 10 hits and arena tours under his belt and a celebrity status that keeps him -- for better or worse -- a household name. His Journals project last year didn’t fly at radio, but hinted at an intriguing R&B sound while showcasing Bieber’s gifted vocals. Can a boy wonder become an adult icon despite a bumpy transition? We’ll soon find out.

21 Under 21's Next Class | Top 21 Songs by Under-21 Singers 


Billboard's 2014 21 Under 21 List